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2 Controlling moisture on the job Challenges Rain, humidity, and temperature can cause construction materials such as lumber, sheetrock, and trim to absorb moisture, and without the right environment, it is difficult to effectively dry these materials. Water damage from Mother Nature, defective material, broken pipes, and fire can seriously harm structures and businesses. If immediate action is not taken, the standing moisture will permeate and encourage growth of mold and bacteria. Solutions Create the ideal environment for evaporation by encouraging wet molecules to migrate to dry molecules. The drier the surrounding air becomes, the faster moisture will release from saturated materials and turn from a liquid to vapor. Equipment ranging from dehumidifiers to heat exchangers to air movers is available to help manage important factors required for moisture removal: humidity, temperature, and airflow.

3 Effective methods to remove moisture from con Match your machine selection to your site needs Dryvex refrigerant systems Maintain a low humidity level by removing moisture from the air and surrounding material. Moisture-laden air passes across the evaporator coil causing water to condense from a vapor to a liquid. Dryvex convection systems Utilizing heat and air movement, this powerful open drying system uses clean outside air, rather than recycled air, to dry flooded structures and their contents. The outside air is conditioned to a low relative humidity of 5 to 15 percent and blown into the building using flexible ductwork. Thermostatically controlled, the supply blower circulates dry, fresh air throughout the structure. Large quantities of moisture are absorbed and extracted from the building through a second return blower. The best solution for: Speeding tape, mud, and paint processes Drying concrete Reducing mold growth Spaces occupied by people Water damaged structures Refrigerant dehumidification maintains a low humidity level safely, efficiently, and economically. The best solution for: Flooded or water damaged buildings Extracting moisture from construction materials such as: wall studs, subflooring, hardwood floors, sheetrock, ceiling tiles, and wood trim Convection dehumidification facilitates extremely quick drying while eliminating potential mold or bacteria growth in the building.

4 struction materials and buildings: Liquid-to-air systems Used in conjunction with any or our hydronic heaters, this closed drying system utilizes a series of liquid-to-air Heat Xchanger systems to dry flooded structures and their contents. The Heat Xchanger systems are placed inside the structure to pressurize, heat, and condition the air to a low relative humidity. Air movers are used to extract the moisture-laden air from the building. Dryvex air movers Speed drying time by improving the water evaporation process. During evaporation, moisture naturally wicks to the surface of a material before converting to a vapor. A layer of water vapor gas called the boundary layer forms. In order to speed the evaporation process, the boundary layer must continuously be swept away from the surface. These high cfm air movers are a convenient and economical way to provide rapid air movement. The best solution for: Flooded or water damaged buildings Extracting moisture from construction materials such as: wall studs, subflooring, hardwood floors, sheetrock, ceiling tiles, and wood trim Liquid-to-air dehumidification enables quick drying and eliminates potential mold or bacteria growth in the building. Works best: In conjunction with a refrigerant, convection, or liquid-to-air dehumidification system Air movers are vital to create an ideal moisture removal environment. Wacker Neuson Climate Technology is a proud member of the USGBC. Additionally, heaters featuring this logo, may assist with LEED project certification for Indoor Air Quality Credits IEQ 3.1/3.2

5 Control your environment Reducing drying time determines the success or failure of many construction and restoration projects. Introducing Energy in the form of Heat, accompanied with a higher airflow rate leads to greater evaporation potential, resulting in reduced drying times Grains/pound How to control the evaporation rate: Grains/pound Temperature F C Grains/ Pound Humidity If the temperature remains constant, a lower relative humidity will occur, resulting in a faster drying rate Airflow The rate at which evaporation will occur. A higher airflow rate will speed up the evaporation process, while a lower airflow rate will slow down the process Remember HAT Temperature Nothing influences evaporation rate more than heat. Rising air temperatures increase the moistureholding capacity of the air. If relative humidity remains constant, and air temperature and vapor pressure are high, evaporation will take place at a faster rate. The amount of water that air molecules can hold depends upon temperature. Hot or warm air can retain much more than cool and cold air. This chart illustrates how much moisture air can hold by temperature at saturation, 100 percent humidity.

6 Expandable drying solutions Drying Heating Air exchange Whether it s simply drying out construction materials or restoring a water damaged building, the Wacker Neuson Climate Technology line offers a number of solutions to match any size challenge. Mobile units are completely self-contained with onboard generator and fuel tank Shortens insurance claim cycles and decreases claim costs by reducing drying time Drastically minimizes reconstruction costs Decreases secondary damage from mold and bacteria growth Refrigerant Commercial Dehumidifiers Use a Dryvex refrigerant system to keep your restoration and construction projects on schedule and within budget. Inexpensive to run and easy to use, the Dryvex dehumidifier is guaranteed to decrease drying time. Indirect-Fired Air Heaters Versatile, innovative and robust indirect-fired air heaters offer safe, clean and dry heat and are extremely fuel efficient, helping lower operating cost and keeping your restoration projects on schedule. Wacker Neuson offers variety of models and sizes, including Diesel or Natural Gas/LP options. Air Movers Complete the perfect environment for fast, efficient drying. Equipped with an ultrahighefficiency 16-inch axial fan, the AM3000 moves an impressive 3,000 cfm on just 2 amps of power. Attach the optional caster package for top-down drying. Liquid-to-Air Heat Xchangers Finish work is a breeze with an HX Heat Xchanger system on the job. Simply position the equipment in the desired location and enjoy a clean, warm, dry environment. This accessory is used with any Wacker Neuson hydronic heater. Three models are available: HX50, HX100, and HX updated /Mar-2012/Layout Goes Studio/Printing Marek Group Key Features and Benefits:

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